// Mixins.less
// Snippets of reusable CSS to develop faster and keep code readable
// Borrowed from Bootstrap2
// -----------------------------------------------------------------
//
// UTILITY MIXINS

// Clearfix
.clearfix() {
	*zoom: 1;
	&:before,
	&:after {
		display: table;
		content: "";
	}

	&:after {
		clear: both;
	}
}

// Webkit-style focus
.tab-focus() {
	// Default
	outline: none;
	// Webkit
	outline: 5px auto -webkit-focus-ring-color;
	outline-offset: -2px;
	// Firefox
	-moz-outline: 5px auto -moz-mac-focusring;
	-moz-outline-offset: 0;
}

// Sizing shortcuts
.size(@height: 5px, @width: 5px) {
	width: @width;
	height: @height;
}
.square(@size: 5px) {
	.size(@size, @size);
}

// Placeholder text
.placeholder(@color: @placeholderText) {
	:-moz-placeholder {
		color: @color;
	}
	::-webkit-input-placeholder {
		color: @color;
	}
}

// CSS3 PROPERTIES

// Border Radius
.border-radius(@radius: 5px) {
	-webkit-border-radius: @radius;
	-moz-border-radius: @radius;
	border-radius: @radius;
}

// Drop shadows
.box-shadow(@shadow: 0 1px 3px rgba(0,0,0,.25)) {
	-webkit-box-shadow: @shadow;
	-moz-box-shadow: @shadow;
	box-shadow: @shadow;
}

// Transitions
.transition(@transition) {
	-webkit-transition: @transition;
	-moz-transition: @transition;
	-ms-transition: @transition;
	-o-transition: @transition;
	transition: @transition;
}

// Transformations
.rotate(@degrees) {
	-webkit-transform: rotate(@degrees);
	-moz-transform: rotate(@degrees);
	-ms-transform: rotate(@degrees);
	-o-transform: rotate(@degrees);
	transform: rotate(@degrees);
}
.scale(@ratio) {
	-webkit-transform: scale(@ratio);
	-moz-transform: scale(@ratio);
	-ms-transform: scale(@ratio);
	-o-transform: scale(@ratio);
	transform: scale(@ratio);
}
.translate(@x: 0, @y: 0) {
	-webkit-transform: translate(@x, @y);
	-moz-transform: translate(@x, @y);
	-ms-transform: translate(@x, @y);
	-o-transform: translate(@x, @y);
	transform: translate(@x, @y);
}

// Background clipping
// Heads up: FF 3.6 and under need "padding" instead of "padding-box"
.background-clip(@clip) {
	-webkit-background-clip: @clip;
	-moz-background-clip: @clip;
	background-clip: @clip;
}

// Background sizing
.background-size(@size){
	-webkit-background-size: @size;
	-moz-background-size: @size;
	-o-background-size: @size;
	background-size: @size;
}


// Box sizing
.box-sizing(@boxmodel) {
	-webkit-box-sizing: @boxmodel;
	-moz-box-sizing: @boxmodel;
	box-sizing: @boxmodel;
}

// User select
// For selecting text on the page
.user-select(@select) {
	-webkit-user-select: @select;
	-moz-user-select: @select;
	-o-user-select: @select;
	user-select: @select;
}

// Resize anything
.resizable(@direction: both) {
	resize: @direction; // Options: horizontal, vertical, both
	overflow: auto; // Safari fix
}

// CSS3 Content Columns
.content-columns(@columnCount, @columnGap: @gridColumnGutter) {
	-webkit-column-count: @columnCount;
	-moz-column-count: @columnCount;
	column-count: @columnCount;
	-webkit-column-gap: @columnGap;
	-moz-column-gap: @columnGap;
	column-gap: @columnGap;
}

// Opacity
.opacity(@opacity: 100) {
	opacity: @opacity / 100;
	filter: e(%("alpha(opacity=%d)", @opacity));
}



// BACKGROUNDS

// Add an alphatransparency value to any background or border color (via Elyse Holladay)
#translucent {
	.background(@color: @white, @alpha: 1) {
		background-color: hsla(hue(@color), saturation(@color), lightness(@color), @alpha);
	}
	.border(@color: @white, @alpha: 1) {
		border-color: hsla(hue(@color), saturation(@color), lightness(@color), @alpha);
		.background-clip(padding-box);
	}
}

// Gradient Bar Colors for buttons and alerts
.gradientBar(@primaryColor, @secondaryColor) {
	#gradient > .vertical(@primaryColor, @secondaryColor);
	border-color: @secondaryColor @secondaryColor darken(@secondaryColor, 15%);
	border-color: rgba(0,0,0,.1) rgba(0,0,0,.1) fadein(rgba(0,0,0,.1), 15%);
}

// Gradients
#gradient {
	.horizontal(@startColor: #555, @endColor: #333) {
		background-color: @endColor;
		background-image: -moz-linear-gradient(left, @startColor, @endColor); // FF 3.6+
		background-image: -ms-linear-gradient(left, @startColor, @endColor); // IE10
		background-image: -webkit-gradient(linear, 0 0, 100% 0, from(@startColor), to(@endColor)); // Safari 4+, Chrome 2+
		background-image: -webkit-linear-gradient(left, @startColor, @endColor); // Safari 5.1+, Chrome 10+
		background-image: -o-linear-gradient(left, @startColor, @endColor); // Opera 11.10
		background-image: linear-gradient(left, @startColor, @endColor); // Le standard
		background-repeat: repeat-x;
	}
	.vertical(@startColor: #555, @endColor: #333) {
		background-color: mix(@startColor, @endColor, 60%);
		background-image: -moz-linear-gradient(top, @startColor, @endColor); // FF 3.6+
		background-image: -ms-linear-gradient(top, @startColor, @endColor); // IE10
		background-image: -webkit-gradient(linear, 0 0, 0 100%, from(@startColor), to(@endColor)); // Safari 4+, Chrome 2+
		background-image: -webkit-linear-gradient(top, @startColor, @endColor); // Safari 5.1+, Chrome 10+
		background-image: -o-linear-gradient(top, @startColor, @endColor); // Opera 11.10
		background-image: linear-gradient(top, @startColor, @endColor); // The standard
		background-repeat: repeat-x;
	}
	.directional(@startColor: #555, @endColor: #333, @deg: 45deg) {
		background-color: @endColor;
		background-repeat: repeat-x;
		background-image: -moz-linear-gradient(@deg, @startColor, @endColor); // FF 3.6+
		background-image: -ms-linear-gradient(@deg, @startColor, @endColor); // IE10
		background-image: -webkit-linear-gradient(@deg, @startColor, @endColor); // Safari 5.1+, Chrome 10+
		background-image: -o-linear-gradient(@deg, @startColor, @endColor); // Opera 11.10
		background-image: linear-gradient(@deg, @startColor, @endColor); // The standard
	}
	.vertical-three-colors(@startColor: #00b3ee, @midColor: #7a43b6, @colorStop: 50%, @endColor: #c3325f) {
		background-color: mix(@midColor, @endColor, 80%);
		background-image: -webkit-gradient(linear, 0 0, 0 100%, from(@startColor), color-stop(@colorStop, @midColor), to(@endColor));
		background-image: -webkit-linear-gradient(@startColor, @midColor @colorStop, @endColor);
		background-image: -moz-linear-gradient(top, @startColor, @midColor @colorStop, @endColor);
		background-image: -ms-linear-gradient(@startColor, @midColor @colorStop, @endColor);
		background-image: -o-linear-gradient(@startColor, @midColor @colorStop, @endColor);
		background-image: linear-gradient(@startColor, @midColor @colorStop, @endColor);
		background-repeat: no-repeat;
	}
	.radial(@innerColor: #555, @outerColor: #333)  {
		background-color: @outsideColor;
		background-image: -webkit-gradient(radial, center center, 0, center center, 460, from(@centerColor), to(@outsideColor));
		background-image: -webkit-radial-gradient(circle, @centerColor, @outsideColor);
		background-image: -moz-radial-gradient(circle, @centerColor, @outsideColor);
		background-image: -ms-radial-gradient(circle, @centerColor, @outsideColor);
		background-repeat: no-repeat;
		// Opera cannot do radial gradients yet
	}
	.striped(@color, @angle: -45deg) {
		background-color: @color;
		background-image: -webkit-gradient(linear, 0 100%, 100% 0, color-stop(.25, rgba(255,255,255,.15)), color-stop(.25, transparent), color-stop(.5, transparent), color-stop(.5, rgba(255,255,255,.15)), color-stop(.75, rgba(255,255,255,.15)), color-stop(.75, transparent), to(transparent));
		background-image: -webkit-linear-gradient(@angle, rgba(255,255,255,.15) 25%, transparent 25%, transparent 50%, rgba(255,255,255,.15) 50%, rgba(255,255,255,.15) 75%, transparent 75%, transparent);
		background-image: -moz-linear-gradient(@angle, rgba(255,255,255,.15) 25%, transparent 25%, transparent 50%, rgba(255,255,255,.15) 50%, rgba(255,255,255,.15) 75%, transparent 75%, transparent);
		background-image: -ms-linear-gradient(@angle, rgba(255,255,255,.15) 25%, transparent 25%, transparent 50%, rgba(255,255,255,.15) 50%, rgba(255,255,255,.15) 75%, transparent 75%, transparent);
		background-image: -o-linear-gradient(@angle, rgba(255,255,255,.15) 25%, transparent 25%, transparent 50%, rgba(255,255,255,.15) 50%, rgba(255,255,255,.15) 75%, transparent 75%, transparent);
		background-image: linear-gradient(@angle, rgba(255,255,255,.15) 25%, transparent 25%, transparent 50%, rgba(255,255,255,.15) 50%, rgba(255,255,255,.15) 75%, transparent 75%, transparent);
	}
}


// Button backgrounds generator
.buttonBackground(@startColor, @endColor) {
	// gradientBar will set the background to a pleasing blend of these, to support IE<=9
	.gradientBar(@startColor, @endColor);

	// in these cases the gradient won't cover the background, so we override
	&:hover, &:active, &.active, &.disabled {
		background-color: @endColor;
	}

	// called out separately because IE8 would ignore otherwise
	&[disabled] {
		background-color: @endColor;
	}

	// IE 7 + 8 can't handle box-shadow to show active, so we darken a bit ourselves
	&:active,
	&.active {
		background-color: darken(@endColor, 10%) e("\9");
	}
}

/* Ellipsis */
.ellipsis {
	white-space: nowrap;
	overflow: hidden;
	text-overflow: ellipsis;
	-webkit-text-overflow: ellipsis;
	-moz-text-overflow: ellipsis;
	-o-text-overflow: ellipsis;
	-ms-text-overflow: ellipsis;
}

/* CSS Arrows */
#CSSArrow {
  .top(@arrowWidth: 5px, @arrowColor: @black, @arrowOffset: 0, @arrowPosition: 50%) {
    bottom: @arrowOffset;
    left: @arrowPosition;
    margin-left: -@arrowWidth;
    border-left: @arrowWidth solid transparent;
    border-right: @arrowWidth solid transparent;
    border-top: @arrowWidth solid @arrowColor;
  }
  .left(@arrowWidth: 5px, @arrowColor: @black, @arrowOffset: 0, @arrowPosition: 50%) {
    top: @arrowPosition;
    right: @arrowOffset;
    margin-top: -@arrowWidth;
    border-top: @arrowWidth solid transparent;
    border-bottom: @arrowWidth solid transparent;
    border-left: @arrowWidth solid @arrowColor;
  }
  .bottom(@arrowWidth: 5px, @arrowColor: @black, @arrowOffset: 0, @arrowPosition: 50%) {
    top: -@arrowOffset;
    left: @arrowPosition;
    margin-left: -@arrowWidth - 1;
    border-left: @arrowWidth solid transparent;
    border-right: @arrowWidth solid transparent;
    border-bottom: @arrowWidth solid @arrowColor;
  }
  .right(@arrowWidth: 5px, @arrowColor: @black, @arrowOffset: 0, @arrowPosition: 50%) {
    top: @arrowPosition;
    left: @arrowOffset;
    margin-top: -@arrowWidth;
    border-top: @arrowWidth solid transparent;
    border-bottom: @arrowWidth solid transparent;
    border-right: @arrowWidth solid @arrowColor;
  }
}
